WO2020243865A1

WO2020243865A1 - Periscopic lens module and prism device applied to same

Info

Publication number: WO2020243865A1
Application number: PCT/CN2019/089728
Authority: WO
Inventors: 李林珍; 卢继亮; 李刚; 张晋
Original assignee: 瑞声光学解决方案私人有限公司
Priority date: 2019-06-01
Filing date: 2019-06-01
Publication date: 2020-12-10
Also published as: JP2021524930A; JP6951828B2; US20200379238A1; CN110261991A; US11835703B2; CN110261991B

Abstract

Provided are a periscopic lens module and a prism device (100) applied to the periscopic lens module. The prism device (100) comprises a prism (1), a bearing member (2), a support member (3), a ball (4), an elastic member (5), and a driving member (6), wherein the bearing member (2) comprises a bearing frame (21), the ball (4) is mounted at the top of the bearing frame (21), the support member (3) comprises a prism holder (31), a driving stand (32), and a rotation bracket (33) connected between the prism holder (31) and the driving stand (32) and fitting with the ball (4) in a rotating manner, the elastic member (5) comprises a first elastic bracket (51) and a second elastic bracket (52), the first elastic bracket (51) has a first abutting portion (511), the second elastic support (52) has a second abutting portion (521), the first abutting portion (511) and the second abutting portion (521) abut against the top of the rotation bracket (33) from two sides of the ball (4) at an interval so as to press the rotation bracket (33) and the ball (4) on the bearing frame (21), and the driving member (6) is connected between the bearing member (2) and the driving stand (32) to drive the support member (3) to cause the prism (1) to rotate, such that a prism adjustment structure is simplified and anti-shake is achieved.

Description

Periscope lens module and prism device applied to periscope lens module

Technical field

The present invention relates to the technical field of optical imaging, in particular to a periscope lens module and a prism device applied to the periscope lens module.

Background technique

In recent years, with the development of imaging technology and the rise of electronic products with imaging functions, optical lenses have been widely used in various electronic products. The existing periscope lens modules all require a prism device with an anti-shake function.

technical problem

The purpose of the present invention is to provide a prism device applied to a periscope lens module to realize the anti-shake function.

Technical solutions

In order to achieve the above objective, the present invention provides a prism device applied to a periscope lens module, including a prism, a bearing member, a supporting member, a ball, an elastic member, and a driving member. The bearing member includes a bearing frame, and the ball Installed on the top of the carrier, the supporting member includes a prism bracket, a driving bracket, and a rotating bracket connected between the prism bracket and the driving bracket and rotatably matched with the ball, and the elastic member includes a first An elastic support and a second elastic support, the first elastic support has a first pressing part, the second elastic support has a second pressing part, the first pressing part and the second pressing part The balls are pressed against the top of the rotating bracket at intervals from both sides of the balls for pressing the rotating bracket and the balls against the carrier frame, and the driving member is connected to the carrier member and The driving brackets are used to drive the supporting member to drive the prism to rotate.

Further, the top of the supporting frame is recessed with positioning grooves for positioning the balls, and the side of the rotating bracket facing the supporting frame is recessed with an arc-shaped groove for matching with the balls .

Further, the bearing member further includes a fixing frame arranged in parallel with the driving bracket and a base with one end connected to the fixing frame, the bearing frame is installed on the base, and the driving member is connected to the fixing frame And the drive bracket.

Further, the fixing frame includes a side plate connected to the base at one end, an FPC board arranged between the side plate and the driving bracket, and a plurality of fasteners, one end of the fastener is inserted through The FPC board and the side board are used to fix the FPC board on the side board.

Further, one end of the side plate away from the base is provided with a first limiting plate for restricting the prism holder from moving out of the carrying member, and an end of the base away from the fixing frame is provided with a first limiting plate for restricting the prism The bracket moves out of the second limiting plate of the bearing member.

Further, a card slot for restricting the movement of the carrier is provided on the base.

Further, the first elastic bracket further includes two first extension parts bent and extended from both ends of the first pressing part, a first bending part connected to the end of the first extension part, and a first bending part connected to the end of the first extension part. The second extension part is extended and the first mounting part is bent from the end of the second extension part. The second elastic bracket also includes two third extension parts bent and extended from both ends of the second pressing part, connected to the The second bending portion at the end of the three extension portions, the fourth extension portion extending from the end of the second bending portion, and the second mounting portion bent from the end of the fourth extension portion, the first mounting portion and the second The installation parts are all clamped in the card slot.

Further, the driving member includes a plurality of shape memory alloy wires, a side of the driving bracket close to the fixing frame is provided with a plurality of hooks, and two ends of each shape memory alloy wire are respectively fixed to two adjacent buckles The middle part of each shape memory alloy wire is connected with a corresponding hook.

Further, a side of the rotating bracket away from the ball is provided with a first protrusion and a second protrusion, the first pressing portion is pressed against the first protrusion, and the second pressing portion Press against the second protrusion.

The present invention also provides a periscope lens module, including a lens device, an image sensor, and the above-mentioned prism device applied to the periscope lens module, the lens device being arranged in the periscope lens module Between the prism device and the image sensor. .

Beneficial effect

The beneficial effect of the present invention is: by connecting the driving member between the bearing member and the driving bracket, the driving member drives the driving bracket to move, thereby driving the rotating bracket to move with the ball as the fulcrum, and is provided by the first elastic bracket and the second elastic bracket The restoring force then drives the prism holder to move, realizing the angle adjustment of the prism, the structure is simple, and the anti-shake can be realized.

Description of the drawings

FIG. 1 is a schematic diagram of a prism device applied to a periscope lens module according to an embodiment of the present invention.

FIG. 2 is an exploded schematic diagram of the prism device applied to the periscope lens module of FIG. 1.

Fig. 3 is a schematic diagram of a bearing member provided by an embodiment of the present invention.

Fig. 4 is a schematic diagram of a carrier provided by an embodiment of the present invention.

FIG. 5 is a schematic diagram of an elastic member 5 provided by an embodiment of the present invention.

Fig. 6 is a schematic diagram of a driving bracket provided by an embodiment of the present invention.

FIG. 7 is a schematic diagram of a periscope lens module provided by an embodiment of the present invention.

In the picture: 100. Prism device applied to periscope lens module; 1. Prism; 2. Carrying member; 21. Carrying frame; 211. Positioning slot; 22. Fixing frame; 221. Side plate; 222. FPC board 223, buckle; 224, first limit plate; 225, second limit plate; 226, card slot; 23, base; 3. support member; 31, prism bracket; 32, drive bracket; 321, hook 33. Rotating bracket; 331, first protrusion; 332, second protrusion; 4, ball; 5. elastic member; 51, first elastic bracket; 511, first pressing part; 512, first extension part 513, the first bending part; 514, the second extension; 515, the first mounting part; 52, the second elastic support; 521, the second pressing part; 522, the third extension; 523, the second bending Folding part; 524, fourth extension part; 525, second mounting part; 6, driver; 60, shape memory alloy wire; 61, first shape memory alloy wire; 62, second shape memory alloy wire; 63, section Three shape memory alloy wire; 64, the fourth shape memory alloy wire; 200, lens device; 300, image sensor.

Embodiments of the invention

The present invention will be further described below with reference to the drawings and embodiments.

It should be noted that all the directional indicators (such as up, down, inside, outside, top, bottom...) in the embodiments of the present invention are only used to explain the difference between the components in a specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, the element may be directly on the other element or there may be a centering element at the same time. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or an intermediate element may also exist.

Referring to FIGS. 1-2, the prism device 100 applied to a periscope lens module provided by an embodiment of the present invention includes a prism 1, a supporting member 2, a supporting member 3, a ball 4, an elastic member 5, and a driving member 6, which carries The component 2 includes a carrier 21, and the ball 4 is mounted on the top of the carrier 21. The support member 3 includes a prism holder 31, a driving holder 32, and a rotating holder 33 connected between the prism holder 31 and the driving holder 32 and rotatably matched with the ball 4 , The elastic member 5 includes a first elastic support 51 and a second elastic support 52, the first elastic support 51 has a first pressing portion 511, the second elastic support 52 has a second pressing portion 521, the first pressing portion 511 and The second pressing portion 521 presses against the top of the rotating bracket 33 at intervals from both sides of the ball 4 to press the rotating bracket 33 and the ball 4 against the carrier 21. The driving member 6 is connected to the carrier member 2 and the driving The brackets 32 are used to drive the supporting member 3 to drive the prism 1 to rotate relative to the supporting member 2. The driving bracket 32 moves in a plane perpendicular to the Z axis under the action of the driving member 6, thereby driving the rotating bracket 33 to move around the ball 4, thereby driving the prism bracket 31 to move, and is driven by the first elastic bracket 51 and the second elastic bracket 52 Provide restoring force, realize the angle adjustment of the prism 1, the adjustment structure is simple, and the anti-shake can be realized.

It should be noted that the width direction of the carrier 21 is defined as the X-axis direction in the present invention, the height direction of the carrier 21 is the Y-axis direction, and the length direction of the carrier 21 is the Z-axis direction. The axis direction and the Z axis direction are perpendicular to each other.

As shown in Figure 2, the top of the carrier 21 is recessed with positioning grooves 211 for the placement and positioning of the balls 4, and the side of the rotating bracket 33 facing the carrier 21 is recessed with an arc-shaped groove for mating with the balls 4 ( (Not shown in the figure), the rotating bracket 33 can move around the ball 4 through the cooperation of the arc-shaped groove and the ball 4.

As shown in Figures 2-3, the bearing member 2 further includes a fixing frame 22 arranged in parallel with the driving bracket 32 and a base 23 connected to the fixing frame 22 at one end. The bearing frame 21 is arranged on the base 23, and the fixing frame 22 is perpendicular to the base 23. , The driving member 6 is connected between the fixing frame 22 and the driving bracket 32.

The fixing frame 22 includes a side plate 221 connected to the base 23 at one end, an FPC board (flexible circuit board) 222 arranged between the side plate 221 and the driving bracket 32, and a plurality of fasteners 223. One end of the fastener 223 passes through The FPC board 222 and the side board 221 are used to fix the FPC board 222 on the side board 221, and the FPC board 222 is used to provide electrical signals for the driving member 6 to control the movement of the driving member 6.

As shown in FIGS. 1-3, one end of the side plate 221 away from the base 23 is provided with a first limiting plate 224 for restricting the prism holder 31 from moving out of the carrying member 2, thereby limiting the movement range of the prism holder 31 in the Y-axis direction. An end far away from the fixing frame 22 is provided with a second limiting plate 225 for restricting the prism holder 31 from moving out of the carrying member 2 so as to limit the moving range of the prism holder 31 in the Z-axis direction. The base 23 is provided with a slot 226 that is also used to limit the movement of the carrier 21, and the carrier 21 is arranged in the slot 226 to realize the fixation of the carrier 21.

As shown in FIGS. 4-5, the first elastic support 51 further includes two first extension portions 512 bent and extended from both ends of the first pressing portion 511, and a first bending portion 513 connected to the end of the first extension portion 512 , A second extension portion 514 extending from the end of the first bending portion 513 and a first mounting portion 515 bent from the end of the second extension portion 514. Preferably, the first bending portion 513 has a U-shaped structure, and both ends of the U-shaped structure are respectively connected to the first extension portion 512 and the second extension portion 514, and the first extension portion 512 and the second extension portion 514 are arranged in parallel, A bending portion 513 is arranged parallel to the base 23, the first mounting portion 515 is parallel to the base 23 and is clamped in the slot 226, and the two first mounting portions 515 respectively abut against the two ends of the carrier 21.

The second elastic bracket 52 further includes two third extension portions 522 bent and extended from both ends of the second pressing portion 521, a second bending portion 523 connected to the end of the third extension portion 522, and a second bending portion 523. The fourth extension portion 524 extending at the end and the second mounting portion 525 bent from the end of the fourth extension portion 524. Preferably, the second bending portion 523 has a U-shaped structure, and both ends of the U-shaped structure are respectively connected to the third extension portion 522 and the fourth extension portion 524, the third extension portion 522 and the fourth extension portion 524 are arranged in parallel, and the first The two bending parts 523 are arranged in parallel with the base 23, the second mounting part 525 is parallel to the base 23 and is clamped in the slot 226, and the two second mounting parts 525 respectively abut against the two ends of the carrier 21.

The side of the rotating bracket 33 away from the ball 4 is provided with a first protrusion 331 and a second protrusion 332. The first pressing portion 511 is pressed against the first protrusion 331, and the second pressing portion 521 is pressed against the second protrusion. 332 is used to improve the efficiency and accuracy of assembly between the elastic member 5 and the carrier 21. Preferably, the middle part between the two ends of the first pressing portion 511 is provided with an enlarged width portion to increase the abutting area between the first pressing portion 511 and the first protrusion 331. The middle portion between the two ends of the second pressing portion 521 is provided with an enlarged width portion to increase the abutting area between the second pressing portion 521 and the second protrusion 332.

As shown in Figures 2, 3 and 6, the driving member 6 includes a plurality of shape memory alloy wires 60, a side of the driving bracket 32 close to the fixing frame 22 is provided with a plurality of hooks 321, and the end of the fastener 223 away from the fixing frame 22 is In the U-shaped structure, the two ends of each shape memory alloy wire 60 are respectively fixed in the U-shaped structure of two adjacent fasteners 223, and the middle portion of each shape memory alloy wire 60 is connected to a corresponding hook 321. Preferably, the number of the shape memory alloy wire 60 and the hook 321 is four, and the number of the fastener 223 is eight. The eight buckle members 223 are distributed in pairs at the four corners of the fixing frame 22, and the four hooks 321 are arranged in the middle of the driving bracket 32 and are arranged opposite to each other.

Specifically, the four shape memory alloy wires 60 can be defined as a first shape memory alloy wire 61, a second shape memory alloy wire 62, a third shape memory alloy wire 63, and a fourth shape memory alloy wire 64. Each shape memory alloy wire The wire 60 has a V-shape. Wherein, the first shape memory alloy wire 61 and the third shape memory alloy wire 63 are respectively arranged on the upper and lower sides of the fixing frame 22 along the Y axis direction, and the first shape memory alloy wire 61 is located above the third shape memory alloy wire 63, The second shape memory alloy wire 62 and the fourth shape memory alloy wire 64 are respectively disposed on the left and right sides of the fixing frame 22 along the X axis direction, the second shape memory alloy wire 62 is located on the right side, and the fourth shape memory alloy wire 64 is located on the left side. side.

In specific operation, when the first shape memory alloy wire 61 is energized and heats up and shortens, the driving bracket 32 receives an upward pulling force and transmits this force to the rotating bracket 33, so that the rotating bracket 33 uses the ball 4 as a fulcrum around the X axis to move backwards. The prism 1 rotates in the clockwise direction to drive the prism 1 relative to the carrier 21 to rotate counterclockwise around the X axis; when the third shape memory alloy wire 63 is energized and heats up and shortens, the prism 1 rotates clockwise relative to the carrier 21 around the X axis When the second shape memory alloy wire 62 is energized and heated and shortened, the prism 1 can be rotated in one direction around the Y axis relative to the carrier 21; when the fourth shape memory alloy wire 64 is energized and heats up and shortens, the prism 1 can be opposite The carrying frame 21 realizes rotation around the Y axis in another opposite direction. The shape memory alloy wire 60 of the present application can also be referred to as an SMA wire, which is a shape memory alloy wire of the prior art, and will not be described in detail here.

Referring to FIG. 7, the present invention also provides a periscope lens module, including a lens device 200, an image sensor 300, and the above-mentioned prism device 100 applied to the periscope lens module. The lens device 200 is provided in the periscope lens module. Between the prism device 100 and the image sensor 300 of the telescope lens module. The light is reflected by the prism device 100 applied to the periscope lens module and reaches the image sensor 300 in a straight line along the axial direction of the lens device 200.

The above are only the embodiments of the present invention. It should be pointed out here that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present invention, but these all belong to the present invention. The scope of protection.

Claims

A prism device applied to a periscope lens module, characterized in that it comprises a prism, a bearing member, a supporting member, a ball, an elastic member, and a driving part. The bearing member includes a bearing frame, and the ball is mounted on the On the top of the carrying frame, the supporting member includes a prism bracket, a driving bracket, and a rotating bracket connected between the prism bracket and the driving bracket and rotatably matched with the ball. The elastic member includes a first elastic bracket and The second elastic support, the first elastic support has a first pressing part, the second elastic support has a second pressing part, the first pressing part and the second pressing part are separated from the The two sides of the ball are pressed against the top of the rotating bracket at intervals for pressing the rotating bracket and the ball on the supporting frame, and the driving member is connected to the supporting member and the driving bracket It is used to drive the supporting member to drive the prism to rotate.
The prism device applied to a periscope lens module according to claim 1, wherein the top of the carrier frame is recessed with positioning grooves for placing and positioning the balls, and the direction of the rotating bracket is One side of the supporting frame is concavely provided with an arc-shaped groove for matching with the balls.
The prism device applied to a periscope lens module according to claim 1, wherein the carrying member further comprises a fixing frame arranged in parallel with the driving bracket and a base connected to the fixing frame at one end, The supporting frame is installed on the base, and the driving member is connected between the fixing frame and the driving bracket.
The prism device applied to a periscope lens module according to claim 3, wherein the fixing frame includes a side plate connected to the base at one end, and is arranged between the side plate and the driving bracket. An FPC board and a plurality of fasteners, one end of the fastener is inserted through the FPC board and the side panel to fix the FPC board on the side panel.
The prism device applied to a periscope lens module according to claim 4, wherein an end of the side plate away from the base is provided with a first limit for restricting the prism holder from moving out of the supporting member. A positioning plate, an end of the base away from the fixing frame is provided with a second limiting plate for restricting the prism bracket from moving out of the carrying member.
The prism device applied to a periscope lens module according to claim 3, wherein the base is provided with a slot for restricting the movement of the carrier.
The prism device applied to a periscope lens module according to claim 6, wherein the first elastic bracket further comprises two first extension portions bent and extended from both ends of the first pressing portion, and a connection The first bending portion to the end of the first extension portion, the second extension portion extending from the end of the first bending portion, and the first mounting portion bent from the end of the second extension portion, the second elastic bracket further includes Two third extension portions bent and extended at both ends of the second pressing portion, a second bending portion connected to the end of the third extension portion, a fourth extension portion extending from the end of the second bending portion, and a fourth extension portion The second mounting portion is formed by bending the end, and the first mounting portion and the second mounting portion are both clamped in the card slot.
The prism device applied to a periscope lens module according to claim 4, wherein the driving member includes a plurality of shape memory alloy wires, and a side of the driving bracket close to the fixing frame is provided with a plurality of hooks Two ends of each shape memory alloy wire are respectively fixed to two adjacent fasteners, and the middle part of each shape memory alloy wire is connected with a corresponding hook.
The prism device applied to a periscope lens module according to claim 1, wherein a first protrusion and a second protrusion are provided on the side of the rotating bracket away from the ball, and the first protrusion The pressing portion presses against the first protrusion, and the second pressing portion presses against the second protrusion.
A periscope lens module, characterized by comprising a lens device, an image sensor, and the prism device applied to the periscope lens module according to any one of claims 1-9, and the lens device is designed Between the prism device applied to the periscope lens module and the image sensor.